Bill Gates says artificial intelligence will reshape society more than any human invention

Bill Gates

• Bill Gates says AI will surpass all previous inventions in societal impact
• He warns AI poses major risks, including bioterrorism and job disruption
• Gates urges governments to proactively manage AI's development and regulation

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Bill Gates has identified artificial intelligence as the single most consequential invention in human history, arguing that its impact on society will surpass that of any previous technology. In his annual letter, the Microsoft co-founder said the scale and speed of change driven by AI will be unprecedented.

“Of all the things humans have ever created, AI will change society the most,” Gates wrote. While he expressed optimism about AI’s potential to improve healthcare, education and productivity, he also warned that the technology carries serious risks if misused.

Gates said AI could deliver major gains in areas such as medical research, disease detection and access to learning, particularly in parts of the world that currently lack resources. However, he cautioned that the same tools could also be exploited by bad actors, creating threats that governments and institutions are not yet prepared to handle.

One of Gates’s biggest concerns relates to security and public safety. Drawing on past warnings, he recalled a 2015 TED talk in which he said the world was unprepared for a pandemic. He argued that the human cost of COVID-19 could have been far lower if governments had taken those warnings seriously. Today, he believes an even greater risk exists.

Gates warned that non-government groups could use open-source AI tools to design bioterrorism weapons. According to him, the combination of powerful AI systems and publicly available scientific information raises the stakes far beyond previous technological threats.

Beyond security, Gates also highlighted disruption to the global job market as a second major challenge. He said automation powered by AI could displace workers across multiple industries, creating economic and social instability if governments and businesses fail to plan ahead.

“These are real risks that we need to do a better job managing,” Gates wrote. He added that societies must be deliberate about how AI is developed, governed and deployed, rather than reacting only after harm has already occurred.

Concerns about AI misuse are already playing out in real-world regulatory action. In the UK, media regulator Ofcom has launched a formal investigation into X, the social media platform owned by Elon Musk. The probe is examining whether the platform breached safety laws that require tech companies to protect users from illegal content.

The investigation follows reports that X’s AI chatbot, Grok, was being used to generate non-consensual sexualised images and child abuse material. Earlier this week, the UK Prime Minister described such AI-generated content as unlawful and called on the platform to take stronger action to control how its technology is used.

For Gates, these incidents underline why preparation matters. He argues that AI’s impact is not a distant concern but a present reality, and that the window to shape its outcomes is narrowing. Without clear rules, oversight and long-term planning, Gates believes AI’s risks could rival or exceed the benefits it promises.